sigh

-- function used to setup all the necessary trinket data. Gets called in the MC_POST_PEFFECT_UPDATE
function ctc:RegisterTrinketCostume(trinketId, costumeId)
	for i = 0, (game:GetNumPlayers() - 1) do

		local player = Isaac.GetPlayer(i)
		local playerData = player:GetData()
		playerData.TrinketCostume_trinket = {}

		-- register the trinket data in the player data
		playerData.TrinketCostume_trinket[trinketId] = {
			HasTrinket = false,
			COSTUME = costumeId
		}

		print(trinketId)

		-- register the trinketId in a table for later use
		table.insert(moddedTrinkets, trinketId)
		Isaac.ConsoleOutput("Argh")
	end
end

-- function used in the MC_EXECUTE_CMD callback of mods which want the compatibility

function ctc:SwitchCostumeRequirement(player, trinketId)		-- outdated, but left in just in case with problems with the playerData version

	local playerData = player:GetData()

	if playerData.TrinketCostume_trinket[trinketId].HasTrinket == true then
		if player:GetTrinket(0) ~= nil then	-- the player holds at least something
			if player:GetTrinket(0) == trinketId
			or player:GetTrinket(1) == trinketId then
				player:TryRemoveNullCostume(playerData.TrinketCostume_trinket[trinketId].COSTUME) -- remove costume

				playerData.TrinketCostume_trinket[trinketId].HasTrinket = false
			end
		end
	end
end

-- functions used in the MC_POST_UPDATE callback of mods which want the compatibility

function ctc:UpdateTrinketCostume(player, trinketId)

	local playerData = player:GetData()

	if player:HasTrinket(trinketId)
	and playerData.TrinketCostume_trinket[trinketId].HasTrinket == false then

		print(trinketId)
		if onPickup == false then 		-- costume would get applied by smelting the trinket
			if player:GetTrinket(0) ~= trinketId
			and player:GetTrinket(1) ~= trinketId
			and applyCostume == true then		-- still follows the same rules as base game trinkets

				-- costume would get applied by smelting the trinket
				player:AddNullCostume(playerData.TrinketCostume_trinket[trinketId].COSTUME)

				playerData.TrinketCostume_trinket[trinketId].HasTrinket = true
			end
		else
	 		if player:HasTrinket(trinketId) then
				-- costume would get applied by picking up the trinket
				player:AddNullCostume(playerData.TrinketCostume_trinket[trinketId].COSTUME)

				playerData.TrinketCostume_trinket[trinketId].HasTrinket = true
			end
		end

	elseif (not player:HasTrinket(trinketId))
	and playerData.TrinketCostume_trinket[trinketId].HasTrinket == true then

		-- costume would get applied by picking up the trinket
		player:TryRemoveNullCostume(playerData.TrinketCostume_trinket[trinketId].COSTUME)

		playerData.TrinketCostume_trinket[trinketId].HasTrinket = false
	end
end